UK Data: VAT number checks for ChatGPT
uk.co.reliness/validation
Check a UK or EU VAT number against official sources and get the registered name and address
client:ChatGPT
transport:streamable-http
Install UK Data: VAT number checks in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://ukdata.reliness.co.uk/mcp/validation
Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs